Dual-tank garden sprayer unit



FIG. 1 is a front, top and right side perspective view of a dual-tank garden sprayer unit showing my new design, the tubing being shown broken-away to indicate indeterminate length;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side being substantially a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for dual-tank garden sprayer unit, as shown and described. 